Fesfly

It has been a couple of weeks since I received my DF V Ti and I still haven't flown it, never made it past the testing part. When first assembled I noticed that the right and left motors would throttle up violently back and forth etc. I called DFI and sent the board in and they found issues with it and sent me a new one. The new one is essentially doing the same thing. If you hold the DF in your hand steady and start throttling up the left or right motor start fighting each other and it wants to flip.

What I have done so far:
1. Replaced the board = DFI assures me the new board is good. (checked to make sure no wire harness wrapping around the frame)
2. Replaced all the motors.
3. Replace the lipo batteries.
4. Order a replacement transmitter and crystal - waiting for it to arrive (could this be the issue?) - if there are any Fredericton, NB heli owners that could lend me a transmitter I would but them a Tim Hortons coffee.
5. Replaced the left and right blades with new ones (the originals were very curved and after reading this forum I made sure to put new flat ones on).

The new radio is a last resort before I ship it all back to DFI. Any suggestions? all the motors respond when I move the df around as well as when I use the transmitter (the left and right always seem to over compensate so it tries to flip). I have tried to trim it the best I can but there doesn't seem to be a sweet spot for the left and right motors. Regardless of trim settings they still fight it out - if you just tilt the DF just a bit right or left they just over power each other while the front and back motion doesn't create the same effect.

Help me...I think I am losing my mind - it shouldn't be this difficult should it? There are only so many bits and pieces.

Sky High

Are you doing all of this inside or outside? If it's inside, make sure that Ti is turned off. If Ti is activated inside or in a confined area outside, the DF will react with extreme motor pulses and try to pitch and roll uncontrollably. Make sure all of the motors are wired with correct polarity or they will spin backwards. Make sure all opposing rotors are matched. If not, that could cause lift on one side only and cause it to flip. Be sure to calibrate the level before lift off, left stick down and to the right.

Fesfly

Thanks Sky High,

I have tried all of these things and everthing seems to check out. I have been testing inside and usually with the DF in my hand, the couple of times I tried it on the floor it wanted to roll hard. Your description of Ti behaviour seems dead on but it has been disabled throughout testing. One test outdoors with it on yeilded the same results. So, I have it disabled and have been arming the DF but pulling left stick down and to the left, but I have just tried it as you suggested (left stick down to the right) with the same results.

Fesfly

Well it is not the radio, I called Draganfly on Friday and they sent me a new one (which arrived this morning, fast is an understatement, they are a great bunch to deal with!). Well I can't think of anything else the only thing I haven't changed is the wiring harness, I am going to send the entire df back in for them to check out. I am also ordering a second DF today on a different frequency, I just need to figure out what the heck is the issue for myself...

Fesfly

Called DF to get an RMA number and they had me try one more thing - check the ground cables for the right and left motors - they were reversed. Changed them around and all works great, even had my first two foot hover, fantastic! Thanks DFI and Devon, great support.

Sky High

Wait a minute now. Take another look at my first reply about checking the polarity of the motors. You can't be giving DFI all the credit!

Fesfly

Thanks again Sky High,
I thought you meant green wire to red dot, black wire to other terminal - which did check out I just didn't follow them all the way back to the connector - it was just that the black wire that should have been associated with green wire was connected to the motor with the blue wire and visa versa. This caused the motors to spin in the proper directions but just at a crazy rate and of course firing opposite of what they should have. Just popped the connectors out and switched the black wires at that end so I didn't have to reroute anything or take the frame apart. I have been flying (indoors) since- 6 lipo packs later and no crashes just minor bumps into table legs. Still can't hover in one spot for more than a few seconds. Love it! Did a test flight indoors with the Canon camera and pico switch attached and it works great, the DF takes off without issue but certainly not as easily without and a little sluggish which actually makes it a little easier to control - but the landings are rough.

Sky High

Ohhh. Well, I was talking about the connections at the motors. So yours was a total miswired harness. Rearranging the wires from the board connector was definitely easier than unsoldering and rerouting the wires through the tubes.